<template>
    <view class="container">
        <view class="common-problem">
            <view class="item" v-for="(item, index) in issueList" :key="item.id">
                <view class="question-box">
                    <text class="spot"></text>
                    <text class="question">{{ item.question }}</text>
                </view>

                <view class="answer">
                    {{ item.answer }}
                </view>
            </view>
        </view>

        <view class="page" v-if="showPage">
            <view :class="'prev ' + (page <= 1 ? 'disabled' : '')" @tap="prevPage">上一页</view>
            <view :class="'next ' + (count / limit < page ? 'disabled' : '')" @tap="nextPage">下一页</view>
        </view>
    </view>
</template>

<script>
var util = require('../../utils/util.js');

var api = require('../../config/api.js');

var app = getApp();
export default {
    data() {
        return {
            issueList: [],
            page: 1,
            limit: 10,
            count: 0,
            showPage: false
        };
    }
    /**
     * 生命周期函数--监听页面加载
     */,
    onLoad: function (options) {
        this.getIssue();
    },
    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function () {},
    /**
     * 生命周期函数--监听页面显示
     */
    onShow: function () {},
    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide: function () {},
    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload: function () {},
    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh: function () {},
    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom: function () {},
    /**
     * 用户点击右上角分享
     */
    onShareAppMessage: function () {},
    methods: {
        nextPage: function (event) {
            var that = this;

            if (this.page > that.count / that.limit) {
                return true;
            }

            that.setData({
                page: that.page + 1
            });
            this.getIssue();
        },

        getIssue: function () {
            let that = this;
            that.setData({
                showPage: false,
                issueList: []
            });
            util.request(api.IssueList, {
                page: that.page,
                limit: that.limit
            }).then(function (res) {
                if (res.errno === 0) {
                    that.setData({
                        issueList: res.data.list,
                        showPage: true,
                        count: res.data.total
                    });
                }
            });
        },

        prevPage: function (event) {
            if (this.page <= 1) {
                return false;
            }

            var that = this;
            that.setData({
                page: that.page - 1
            });
            this.getIssue();
        }
    }
};
</script>
<style>
@import './help.css';
</style>
